Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073271 | Utilization of soot from synthesis gas production in sewage treatment | Siegfried Marquardt, Uwe Kempe, Wolfgang Vodrazka, Gero Lueth | 1991-12-17 |
| 4840736 | Process for producing combustible sewage sludge filter cakes in filter presses | Herbert Lauer, Manfred Neuwirth | 1989-06-20 |
| 4828715 | Cleaning and disposal of carbon black and ash containing wastewaters | Siegfried Marquardt, Gero Lueth, Robert K. Horn, Uwe Kempe | 1989-05-09 |
| 4728437 | Treatment and disposal of wastewaters containing carbon black and ash | Hans Gettert, Knut Kaempfer, Siegfried Marquardt, K. Robert Mueller | 1988-03-01 |
| 4417976 | Dewatering of petroleum-containing sludges with recovery of the oil component | Friedrich Hovemann, Kurt Scherling | 1983-11-29 |
| 4411797 | Dewatering of sewage sludges on chamber filter presses | Klaus Hess, Peter Lintz, Walter Goesele | 1983-10-25 |
| 4224259 | Manufacture of fibrids from polymers | Eckhard Bonitz, Kurt Scherling | 1980-09-23 |
| 4219512 | Manufacture of fibrids from polymers | Richard E. Sinn, Otto Nagel, Eckhard Bonitz, Kurt Scherling, Hans D. Zettler +2 more | 1980-08-26 |
| 4187143 | Manufacture of fibrids from poly(amide-imide) resins | Kurt Scherling, Rolf Steinberger, Eckhard Ropte | 1980-02-05 |